TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

Idle problem sometimes

Old Dec 13, 2002 | 01:50 AM
  #1  
JohnS's Avatar
Thread Starter
Member
 
Joined: Jan 2002
Posts: 187
Likes: 0
From: San Diego
Car: 2004 Nissan 350Z
Engine: 3.5 V6
Transmission: 5 speed auto
Idle problem sometimes

it doesn't do it constantly,but i come to a stop light and it idles at 1000rpms then i tap the gas just a little and it goes back to the normal 500rpms and stays there.What is causing this to happen?Thanks
Reply
Old Dec 13, 2002 | 08:45 AM
  #2  
91TPI5.7's Avatar
Senior Member
 
Joined: Dec 2001
Posts: 652
Likes: 0
From: Pahrump, Nv
Car: 1991 z28
Engine: l98
Transmission: 700r4
There are a few things to check that effect Idle quality.

The Idle Air Motor, on the bottom if the TB. That could be dirty, of no good, try cleaning it with come carb cleaner 1st.

TPS sensor on the Pass. side of the TB above the IAC, could need adjusted or replaced.

Vacuum leak, a tube could be off, bad gasket

Worst case scenario, ECM at which i cant help you with, I havent dug into that part of the car yet.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Infested
Tech / General Engine
3
May 22, 2018 11:56 PM
db057
Tech / General Engine
4
Aug 22, 2015 08:17 PM
zeitghaist
Tech / General Engine
4
Aug 18, 2015 07:33 AM
perZ
TPI
7
Aug 15, 2015 01:17 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 11:54 AM.